China manufacturer of magnetic ballasts for metal halide flood lights & hps flood lights

The new high pressure sodium ballasts overcome existing ballast in the low voltage fluorescent tube defects can not be used under harsh conditions in both ends of the the filament open-and rainwater, it is including Selenium steel core and start the coil, and selenium in the steelsheet core also has an induction coil, the dot end of the preheating coil A, the preheating coil B, and a capacitor, the starting coil and the induction coil with the power supply input is connected to the start winding is connected to the other end of the preheat coil Bpreheating coils A and a capacitor connected in series between the dot end of the non-dot end of the starting coil and the induction coil, the leading ends are respectively provided at both ends of the preheating coil A and the preheating coil B is connected with the fluorescent tube. the hps ballasts structure are simple, durable, and can make the fluorescent normal use, the advantages in many harsh conditions.